CVE ID:	CVE-2021-47442
Description:	In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digital_in_send_sdd_req() 'skb' is allocated in digital_in_send_sdd_req(), but not free when digital_in_send_cmd() failed, which will cause memory leak. Fix it by freeing 'skb' if digital_in_send_cmd() return failed.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-47442 https://git.kernel.org/stable/c/071bdef36391958c89af5fa2172f691b31baa212 https://git.kernel.org/stable/c/071bdef36391958c89af5fa2172f691b31baa212 https://git.kernel.org/stable/c/291c932fc3692e4d211a445ba8aa35663831bac7 https://git.kernel.org/stable/c/291c932fc3692e4d211a445ba8aa35663831bac7 https://git.kernel.org/stable/c/2bde4aca56db9fe25405d39ddb062531493a65db https://git.kernel.org/stable/c/2bde4aca56db9fe25405d39ddb062531493a65db https://git.kernel.org/stable/c/50cb95487c265187289810addec5093d4fed8329 https://git.kernel.org/stable/c/50cb95487c265187289810addec5093d4fed8329 https://git.kernel.org/stable/c/6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86 https://git.kernel.org/stable/c/6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86 https://git.kernel.org/stable/c/74569c78aa84f8c958f1334b465bc530906ec99a https://git.kernel.org/stable/c/74569c78aa84f8c958f1334b465bc530906ec99a https://git.kernel.org/stable/c/88c890b0b9a1fb9fcd01c61ada515e8b636c34f9 https://git.kernel.org/stable/c/88c890b0b9a1fb9fcd01c61ada515e8b636c34f9 https://git.kernel.org/stable/c/fcce6e5255474ca33c27dda0cdf9bf5087278873 https://git.kernel.org/stable/c/fcce6e5255474ca33c27dda0cdf9bf5087278873